The "R" just designates a resistor plug. You are fine with the J19LM.
Champion J19LM or RJ19LM
Rj19lm or j19lm
Rj19lm
The J19LM and QJ19LM are Champion brand spark plugs used for garden machinery. The difference between them is their resistors, the J19LM use a regular resistor while the QJ19LM uses a CDI resistor.
.030" Champion RJ19LM or J19LM for manual, go to: http://www.disruptit.com/manuals/L0020135.pdf
I have used a Champion RJ19LM or J19LM, both work fine.
champion rj19lm or just a regular j19lm will work just fine in that engine
on the back of the plug package it has : replaces CJ8, RCJ8, J19LM & RJ19LM. hope this helps.
champion rj19lm or just a regular j19lm will work just fine in that engine.
Rj19lm
Champion spark plug RJ19LM is for lawn mowers or similar equipment. The standard gap is .030 inches or 0.76mm.
The Champion spark plug rj19lmc should be able to replace j19lm. Many of Champions spark plugs are interchangeable with plugs with the same letter coding.